AI Gantt Chart Generator from Text

Describe project phases and dependencies. Get a Mermaid Gantt chart.

Try one of these — click to open in the generator

12-week MVP launch Gantt chart starting 2026-01-01. Phases: Research (2 weeks), Design (3 weeks, starts week 2 overlapping), Backend (5 weeks, after Design), Frontend (4 weeks, parallel with Backend from week 5), Testing (2 weeks, after all dev), Launch prep (1 week). Milestone at Launch.

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Wedding planning timeline

Wedding planning Gantt chart, 6 months out. Phases: Venue booking (weeks 1-3), Guest list (weeks 2-4), Invitations (weeks 5-8, after guest list), Vendor booking (weeks 3-10), Menu planning (weeks 8-12, after vendors), Final details (weeks 20-24), Wedding day at week 25.

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Product feature Q1 roadmap

Q1 product roadmap Gantt starting 2026-01-01: Feature A (design 2 weeks + build 4 weeks + launch 1 week), Feature B (design 1 week + build 3 weeks, starts week 5), Feature C (only 2 weeks build, starts week 8), Bug bash (last 2 weeks of quarter).

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Rocket launch countdown schedule

Rocket launch countdown Gantt: L-30 days fueling prep, L-14 days final integration test, L-7 days weather assessment window opens, L-3 days launch rehearsal, L-1 day hold review, L-0 launch day (only 6 hours: pre-flight checks, fueling, terminal count, ignition, ascent). Milestone at ignition.

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When to use AI Gantt Chart Generator from Text

Project timeline & kickoff
Six-week project, four workstreams, three milestones. A Gantt chart at kickoff makes 'when is this done' visible to everyone, not just the PM. Best for the plan-at-t-zero snapshot.
Sprint & launch planning
Marketing needs a landing page live by Tuesday, engineering ships the feature by Thursday, DevRel writes the blog post by Friday. A Gantt shows the dependencies before Slack thread #47 tries to.
Dependency tracking
Task A blocks B, B blocks C. When there are more than 3 dependencies to track, a written list becomes unclear. A Gantt chart visualizes which tasks are on the critical path.
Roadmap communication
Quarter-level 'what are we shipping when'. Gantt is the language executives read — used for board updates, all-hands slides, and 'why is your quota this'.
Contract & SLA planning
Client contracts with milestone-based payments, vendor SLAs with delivery dates. A Gantt chart is your source of truth for 'we said we'd have X by Y' — bring it to every progress review.

Building a Gantt chart in chat mode — which bars wait for which, asked not guessed

Hand any AI Gantt chart generator from text a list of tasks and it has to invent the two things the list never contains: how long each bar is, and which bars wait for which. It will usually chain everything end to end starting today. Chat mode asks about the second one — it sets the length of the whole plan — fills in the durations itself, and then hands you the list of numbers it made up. Here is a billing-database migration, built from an opening line with no dates in it at all.

We're moving our billing database off self-hosted MySQL onto managed Postgres. The work: schema audit, provision the new cluster, write migration scripts, run a dual-write period, backfill the old rows, cut reads over, decommission the old box. Make me a Gantt chart.

AskUserQuestion

Does provisioning the Postgres cluster wait for the schema audit to finish, or can infra start it on day one?

Infra starts on day one, in parallel with the audit

Starts after the schema audit

Starts after the migration scripts are written

First draft. The one parallel branch came straight from your answer — the start date and every duration below are still the model's, and it says so rather than asking you for seven numbers.

I filled in a few things you didn't mention

Started the plan on 2026-03-02 — you never named a date, and every bar hangs off this one
Gave every task a duration — 5d for the schema audit, 10d for the scripts, 10d for the dual-write window
Grouped the work into three sections: Preparation, Migration, Cutover
Added a Postgres training task for the on-call team
Marked the cutover critical so it stands out on the chart

Looks goodRemove 1

Dropped the training task. Preparation is now the schema audit and the cluster provisioning, both starting 2026-03-02.

Two fixes. The dual-write window has to run three full weeks, not ten days — finance wants a month-end close to run through both databases before we trust it. And the cutover has to be on a Saturday, the first one after dual-write closes. Don't put the training task back either, we did that last quarter.

AskUserQuestion

With dual-write at three weeks, does the backfill run inside that window or only after it closes?

Backfill starts on day one of the dual-write window

Backfill starts after the dual-write window closes

Final chart. Dual-write closes 2026-04-07, so the cutover lands on Saturday the 11th and the four days in between read as slack rather than a gap nobody noticed.

Three answers and one revision produced a chart with a fixed start date, a parallel provisioning branch, a backfill nested inside the dual-write window, and a cutover pinned to a weekend. Sent one-shot, the same task list would have come back as eight bars in a straight line starting today — which looks like a plan, and is the one shape this migration could never actually run.

Start this conversation →Opens the generator in chat mode with the first message already filled in.

Deep dive

Gantt charts are the classical project management view. Reach for them when your audience needs to see three things at once: what phases exist, how they overlap in time, and where the dependencies are. They shine for engineering planning docs ("here's our 12-week MVP timeline"), stakeholder updates that need a visual TL;DR of "when is this ready?", and any pitch where you need to demonstrate you've thought through sequencing.

Where they fall short: as living documents. A Gantt chart in a static doc is out-of-date the moment reality diverges from plan. Real teams that live in Gantt charts use dedicated tools (Asana, Monday, Jira Advanced Roadmaps) that auto-update from actual task status. Use Mermaid Gantt for the initial "here's the plan" artifact — the checkpoint at project kickoff — not for ongoing tracking.

Mermaid's gantt syntax supports date formats, section grouping, task durations, dependencies (`after taskId`), and milestones. It's intentionally simple compared to full PM tools — no resource assignment, no critical path highlighting, no exact-date-drag rescheduling. That's the tradeoff for something you can `git commit` and version-control alongside the code the roadmap describes.